EXERCISE 7E
OBJECTIVE QUESTIONS
Tick the correct answer in each of the following:
1. (7a2 - 63b?) = ?
(a) (7a-9b)(9a +7b)
(b) (7a-9b)(7a +9b)
(c) 9(a - 3b)(a + 3b)
(d) 7(a - 3b)(a + 3b)
Answers
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Answer:
Answer is (d) 7(a-3b)(a+3b)
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